Effect of Eu³⁺ ions on the physical, optical and luminescence properties of aluminium phosphate glasses

The physical, optical and luminescence properties of lithium aluminium phosphate glasses different doping europium oxide have been investigated to evaluate their properties for solid-state lighting applications. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 250 to 2500 nm. The emission spectra, excited with 394 nm excitation wavelength showed four emission transitions corresponding to⁵D₀→⁷F₁ (591 nm),⁵D₀→⁷F₂ (612 nm),⁵D₀→⁷F₃ (648 nm) and⁵D₀→⁷F₄ (698 nm). The optimal concentration of Eu₂O₃ in lithium aluminium phosphate glasses was 1.00 mol%.